Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

CW8386 Thermopolis (C8386)

Lat: 43.64283°NLon: 108.227°WElev: 4419.52ft.

NA

60°F

16°C

Humidity 33%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 31°F (-1°C)
Visibility NA
Last update 20 May 08:51 PM MDT
Extended Forecast for

4 Miles SSW East Thermopolis WY

  • Tonight

    Tonight: A 20 percent chance of showers after 5am.  Mostly cloudy, with a low around 38. South wind 5 to 7 mph becoming calm  after midnight.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm.  High near 48. Breezy, with a light north wind becoming north northwest 12 to 17 mph in the morning. Winds could gust as high as 26 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 48 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Breezy, with a north wind 10 to 15 mph becoming light and variable  after midnight. Winds could gust as high as 22 mph.

    Low: 34 °F

    Chance
    Showers and
    Breezy then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. Northeast wind around 6 mph becoming light and variable  in the evening.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. Light and variable wind becoming south southwest around 6 mph in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49. East wind 6 to 8 mph becoming south after midnight.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 38. South wind 5 to 7 mph becoming calm after midnight.
Thursday
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 48. Breezy, with a light north wind becoming north northwest 12 to 17 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Breezy, with a north wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Friday
Mostly sunny, with a high near 64. Calm wind becoming northeast around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 40. Northeast wind around 6 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 74. Light and variable wind becoming south southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 49. East wind 6 to 8 mph becoming south after midnight.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Breezy.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Breezy.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW East Thermopolis WY
 43.6°N 108.22°W (Elev. 4495 ft)
7:47 pm MDT May 20, 2026
9pm MDT May 20, 2026-6pm MDT May 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database